Even if we lose, we gain many other things, be it experiences, lessons, understanding our weaknesses, and many other things than helps us live a more successful life in future. Always look at the life & the events for the positive aspect they have.
When you think positive, you will act positive.
I wrote this when I was your age, I don't know if it will be relevant to you today. https://similarworlds.com/accomplishments/success/2448764-I-Want-to-Be-Successful-How-To-Take-Success-Failures-Of-Your
